Hello Students: DAY- 37 Morning Coffee with NEET

HELLO STUDENTS: DAY- 37 Morning

 ENVIRONMENTAL ISSUES

 IMPORTANT TERMS:

·         Afforestation: Plantation of tree to grow new forests.

·         Acid Rain ( Acid Precipitation): Precipitation of acids like sulphurous acid and sulphuric acid formed by the reactions of sulphur dioxide and sulphur trioxide gases present in the atmosphere as pollutants.

·         Biomagnification: The process of increase in the concentration of a pollutant with increasing trophic level in a food chain.

·         BOD(Biochemical Oxygen Demand): The amount of dissolved oxygen needed by microorganisms in decomposing the organic wastes present in water.

·         CO₂Fertilization Affect: The response of plants to the elevated concentration of CO₂.

·         Global Warming: The increase in the global mean temperature due to increased concentration of green house gases in the atmosphere.

·         Green house Gases: The atmospheric gases like Co₂, CH₄, CFCs and N₂O which absorb outgoing infrared radiation from the earth.

·         Green house Effect: Warming up of the earth by the absorption of outgoing infrared radiation by the green house gases present in the atmosphere.

·         Jhuming:The practice of rising of crops on the ash, produced by cutting down forest trees and setting them on fire.

·         Ozone Hole: Refers to the thinning of stratospheric ozone layer during spring.

·         Photochemical Smog: A fogy smoke formed as a result of photochemical reaction between the products of incomplete combustion of petrol and diesel and oxides of nitrogen.

·         Smog: A product of smoke and fog.

Soot: Black coloured particulate pollutants produced due to incomplete combustion of hydrocarbons.

         

Mr. A. KINGSLIN M.Sc, BEd, Phd,(doing)

Post Graduate Teacher in Botany

St. Mary Goretty Hr. Sec School, Manalikarai 

Kanyakumari district